| 释义 | 
		Noun: coma (comas,comae)  kowmu- A state of deep and often prolonged unconsciousness; usually the result of disease or injury
  - comatoseness  - (botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds) 
 - (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed 
 - (optics) an aberration giving a V-shaped flare to an image (e.g. a star in an astronomical observation)
 
 Derived forms: comas, comae See also: comal Type of: cloud, tuft, tussock, unconsciousness Part of: comet Encyclopedia: Coma Coma, post-head injury  |